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Concentrated H(2)SO(4) cannot be used to...

Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,

A

HBr oxidises `H_2SO_4`

B

HBr reduces `H_2SO_4`

C

HBr undergoes disproportionation

D

KBr reacts very slowly

Text Solution

Verified by Experts

The correct Answer is:
B
The HBr so formed reduces `H_2SO_4` and itself gets oxidised to evaluate `Br_2`
`2HBr + H_2SO_4 to 2H_2O +SO_2 + Br_2`
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